Critical fluctuations of the proton density in A+A collisions at 158A GeV
Name
10052_2015_Article_3738.pdf
Size
909.57 KB
Format
Adobe PDF
Checksum (MD5)
4f76da23e2b2acfbade2fe9747c8bdd5
Author(s)
Anticic, T.
Baatar, B.
Bartke, J.
Beck, H.
Betev, L.
Białkowska, H.
Blume, C.
Bogusz, M.
Boimska, B.
Book, J.
Date Issued
December 2015
Journal
The European Physical Journal C
Publisher
Springer Berlin Heidelberg
Citation
(NA49 Collaboration) et al. “Critical Fluctuations of the Proton Density in A+A Collisions at 158A GeV.” The European Physical Journal C 75.12 (2015): n. pag.
Version
Final published version
Abstract
We look for fluctuations expected for the QCD critical point using an intermittency analysis in the transverse momentum phase space of protons produced around midrapidity in the 12.5 % most central C+C, Si+Si and Pb+Pb collisions at the maximum SPS energy of 158A GeV. We find evidence of power-law fluctuations for the Si+Si data. The fitted power-law exponent Φ[subscript 2] = 0.96[superscript +0.38][subscript -0.25] (stat.) ± 0.16 (syst.) is consistent with the value expected for critical fluctuations. Power-law fluctuations had previously also been observed in low-mass π[superscript +] π[superscript 1-] pairs in the same Si+Si collisions.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-015-3738-5
